Look. There's nothing to say about this place that hasn't already been said. The reviews of Last Chance seem to fall into two camps: 1, it's gross and disgusting or 2, it's an amazing wonderland of designer bargains. I know this is hard to grasp, but it's BOTH.
You'll feel the griminess as soon as you descend into the basement. As you come down the stairs or escalator, you'll be greeted by tables of, usually, the least appealing wares: grubby women's shoes in sizes 11 and up! little boys' backpacks (missing at least one strap). Sometimes, though, it'll be "Tank tops for .99!" You still need to be choosy--some of the tank tops are pilly and cheap; others are really nice Ella Moss jersey.
I always go straight to the shoes. I'm a size 10, and there are frequently sales for my size. Half of the wares have clearly been worn by women participating in one of those 3-day breast cancer walks and then returned. But among the grody shoes, you just might find a pair of Dsquared boots in mint condition. I'm telling you, it's hit or miss. Mostly miss, but the hits make up for it.
Always inspect everything you buy really carefully. If it's got makeup stains or really bad holes, you might skip it. But if it's missing a button? Get with the program, people. You can sew on a button. You can probably even replace a zipper. Zippers cost like $3, it'll take you 20 minutes, and if that means you get a designer dress for 7.99, you're still ahead of the game.